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[texts]Overbank Flow Condition in a River Section - Ides Editor
When the flows in natural or man made channel sections exceed the main channel depth, the adjoining floodplains become inundated and carry part of the river discharge. Due to different hydraulic conditions prevailing in the river and floodplain of a compound channel, the mean velocity in the main channel and in the floodplain are different. This leads to the transfer of momentum between the main channel water and that of the floodplain making the flow structure more complex...
Keywords: Over bank Flow; flow interaction; horizontal interface; Flow distribution; Velocity distribution; Main channel; Flood plain
Downloads: 63
[texts]520Criticality of Gust Pressures on the Members of Self Standing Towers - Ides Editor
Tall latticed steel towers are being pursued for the purpose of microwave transmission, T.V. transmission etc. Antennas are fixed at the top of the tower for transmission. The height of the towers may range from 50m to 250m. The structural form consists of latticed steel work, suitable bracing and suitable foundation for the tower legs. Usually bolted connections are provided for the joints. Mainly dead and wind loads are considered for the design of such towers...
Keywords: Gust Pressures; Frequency; Resonance
Downloads: 45
[texts]Sensor Aided Automatic Path Finding Wheelchair - Ides Editor
A conventional motorized wheelchair has been fitted with sensors and programmed with an intelligent guidance system to efficiently maneuver itself automatically from one point to another in a facility equipped with a grid of sensors that provide the wheelchair with the basic map of its course. The device described in this paper has been conceptualized such that once the wheelchair is given information regarding the starting and stopping point in a controlled facility, the wheelchair with this pr...
Keywords: wheelchair; automatic; motorized; sensor aided; path finding
Downloads: 83
[texts]Low Cost Device to Measure the Thickness of Thin Transparent Films - Ides Editor
There is often a requirement to fabricate thin glass plates for prototyping purposes in a research lab. For example to make a prototype of an optic filter there is a need to fabricate a number of thin glass plates and in most moderately equipped optic research laboratory there is facility to etch these glass plates, but lacks instruments to measure its thickness. Our main purpose is to design a system which is cost friendly and is capable of measuring the thickness with a resolution lesser than ...
Keywords: Thickness; Measurement; Electronic System; Optic Device; Michelson Interferometer
Downloads: 92
[texts]A Sensitive Wavelet-Based Algorithm for Fault Detection in Power Distribution Networks - Ides Editor
This paper presents a wavelet based technique for detection and classification of abnormal conditions that occur on power distribution lines. The transients associated with these conditions contain a large spectrum of frequencies, which are analyzed using wavelet transform approach. The proposed technique depends on a sensitive fault detection parameter (denoted SFD) calculated from wavelet multi-resolution decomposition of the three phase currents...
Keywords: Wavelet Transform; Fault detection; Distribution Networks; Inrush currents
Downloads: 69
[texts]Resilient Characteristics of Stone Matrix Asphalt Mixes - Ides Editor
Stone Matrix Asphalt (SMA) is a gap graded mix, characterized by high coarse aggregates, high asphalt contents and polymer or fiber additives as stabilizers. In comparison to dense graded mixtures SMA has higher proportion of coarse aggregate, lower proportion of middle size aggregate and higher proportion of mineral filler. It resists permanent deformation and has the potential for long term performance and durability...
Keywords: stone matrix asphalt; coconut fibre; repeated load indirect tensile test
Downloads: 118
[texts]Effect of Superplasticizer and Silica Fume on Properties of Concrete - Ides Editor
Nowadays high strength and high performance concrete are widely used in many civil engineering constructions. To produce them it is required to reduce the water/powder ratio and increase the binder content. Superplasticizers are commonly used to achieve the workability. Silica fume is one of the popular pozzolanas used in concrete to get imporved properties. The use of silica fume in conjuction with superplastisizers has become the backbone of high strength and high performance concrete...
Keywords: high strength concrete; high performance concrete; superplastcizer; silica fumeI
Downloads: 117
[texts]Dynamic Sub-Channel Allocation in Multiuser OFDM Systems to Achieve Variable Data Rate - Ides Editor
This paper investigates the problem of dynamic multiuser subchannel allocation in the downlink OFDM systems. In traditional TDMA or FDMA systems, resource allocation for each user is non-adaptively fixed. Since the subchannel allocations among the users are not optimized, a group of users is likely to suffer from poor channel gains resulting from large path loss and random fading. To resolve this problem a low-complexity adaptive subchannel allocation algorithm is proposed in this paper...
Keywords: OFDM; Sub-Channel; Multiuser; Variable Data Rate
Downloads: 65
[texts]Treatment of NOx from Diesel Engine Exhaust by Dielectric Barrier Discharge Method - Ides Editor
This paper reports improved performance of discharge plasma in filtered engine exhaust treatment. Our paper deals about the removal of NOX emissions from the diesel exhaust by electric discharge plasma. For the treatment of diesel exhaust a new type of reactor referred to as cross-flow dielectric barrier discharge reactor has been used, where the gas flow is perpendicular to the corona electrode. Experiments were conducted at different flow rates ranging from 2 l/min to 10 l/ min...
Keywords: Electric Discharge; Dielectric Barrier Discharge Cross Flow Reactor (CFR); NOX removal; Filtered diesel exhaust
Downloads: 100
[texts]Waste from Food Industry and their Disposal: Some Facts - IDES editor
Due to increasing industrialization quantity of waste water is increasing at alarming rate while compositions of such waste are being more and more complex. Disposal of such waste must follow suitable treatments so that qualities of effluent for disposal follow requisite standards. Such Standards for effluent are discussed and a case study for a beverage producing plant is reported.
Keywords: industrial waste; eco-friendly disposal; effluent standards; law enforcement; waste minimization
Downloads: 212
[texts]Performance Study of Bi-Angle Shape Skirted Footing in Yellow Soil Subjected to Two-way Eccentric Load - Ides Editor
In clayey soil region of Malwa (M.P.), normally footing rest on yellow soil strata having low bearing capacity. Environmental changes have great impact on the behavior and strength parameter of the yellow soil. skirted footing in which vertical walls surrounds sides of the soil mass beneath the footing, is one of the recognized bearing capacity improvement technique. Construction of vertical skirts at the base of the footing, confining the underlying soil, generates a soil resistance on skirt si...
Keywords: Bi-angle shape skirted footing; model footing; two way eccentric load; bearing capacity; no tilt condition
Downloads: 87
[texts]TCAD Based Analysis of Gate Leakage Current for High-k Gate Stack MOSFET - Ides Editor
Scaling of metal-oxide-semiconductor transistors to smaller dimensions has been a key driving force in the IC industry. This work analysis the gate leakage current behavior of nano scale MOSFET based on TCAD simulation. The Sentaurus Simulator simulates the high-k gate stack structure of N-MOSFET for analysis purpose. The impact of interfacial oxide thickness on the gate tunneling current has been investigated as a function of gate voltages for a given equivalent oxide thickness (EOT) of 1.0 nm...
Keywords: MOESFET; inelastic trap assisted tunnelling; gate tunneling current; High-k stack
Downloads: 220
[texts]A New Method of Determining Instability of Linear System - Ides Editor
In this paper, an algorithm is presented for identification of real eigenvalues on right half of the s-plane, for linear systems, hence determining instability of the system. The proposed approach is based on Gerschgorin theorem and a new approach of Bisection method. The method is efficient since there is no need to determine all real eigenvalues and also characteristic polynomial of the system matrix...
Keywords: Instability; System matrix; Gerschgorin theorem; Bisection method; Power system problem
Downloads: 36
[texts]Estimation of Weekly Reference Evapotranspiration using Linear Regression and ANN Models - Ides Editor
The study investigates the applicability of linear regression and ANN models for estimating weekly reference evapotranspiration (ET0) at Tirupati, Nellore, Rajahmundry, Anakapalli and Rajendranagar regions of Andhra Pradesh. The climatic parameters influencing ET 0 were identified through multiple and partial correlation analysis. The sunshine, temperature, wind velocity and relative humidity mostly influenced the study area in the weekly ET0 estimation...
Keywords: Reference evapotranspiration; multiple linear regression; artificial neural network; performance evaluation
Downloads: 55
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